Delhi Metro Rail Corporation completes longest twin tunnel in Phase-IV

25 Sep 2024 CW Team

According to the official statement, the two tunnel boring machines (TBMs), named Bhoomi and Srishti, emerged simultaneously at Pulbangash Metro Station on Wednesday. This marks the completion of the twin tunnels that connect Derawal Nagar to Pulbangash along the Janakpuri West-R K Ashram corridor, which is an extension of the Magenta line.

"Both TBMs were successfully retrieved at Pulbangash Metro Station on Wednesday, after just over 14 months of operation, covering a total length of approximately 2,997 meters at an average rate of 8.2 meters per tunnel per day. This is also the longest tunneling drive (nearly 3 km) in DMRC's Phase IV works," the statement noted.

The event was attended by Delhi's Chief Secretary, Dharmendra, and Dr. Vikas Kumar, Managing Director of DMRC. Anuj Dayal, Principal Executive Director of Corporate Communications at DMRC, expressed pride in this achievement and reaffirmed the organization's commitment to providing safe and efficient transport infrastructure for Delhi's residents.

The contractor, Afcons, is executing the DC-05 package, which includes six underground stations, tunneling of 14.4 km including crossover, ten cross passages, and a 170-meter open and underground ramp. The company stated, "Today, 3 km of twin tunneling has been completed from Derawal Nagar to Pulbangash."

The twin tunnels were excavated at depths of 14-15 meters, passing through densely populated areas such as Rana Pratap Bagh and Punjabi Basti Colony, while also crossing beneath the Najafgarh drain, a structurally sensitive zone. Despite challenges such as tunneling through submerged water conditions and navigating the under-construction Ghanta Ghar station, no structural damage occurred.

The tunnels, with an internal diameter of 5.8 meters, include six cross passages for passenger safety. Civil work for this section was executed by M/s Afcons. The deployment of TBM Bhoomi began on June 18, 2023, followed by TBM Srishti on August 19, 2023.

"Join industry leaders at RAHSTA Expo, India's premier platform for roads, highways and traffic infrastructure. Register now to explore innovations, network with experts and shape the future of mobility."

The Delhi Metro Rail Corporation (DMRC) has announced the successful completion of its first twin tunnel breakthrough as part of Phase-IV construction. The twin tunnels, stretching approximately 3 kilometers, represent the longest segment built under this phase of the project. According to the official statement, the two tunnel boring machines (TBMs), named Bhoomi and Srishti, emerged simultaneously at Pulbangash Metro Station on Wednesday. This marks the completion of the twin tunnels that connect Derawal Nagar to Pulbangash along the Janakpuri West-R K Ashram corridor, which is an extension of the Magenta line. Both TBMs were successfully retrieved at Pulbangash Metro Station on Wednesday, after just over 14 months of operation, covering a total length of approximately 2,997 meters at an average rate of 8.2 meters per tunnel per day. This is also the longest tunneling drive (nearly 3 km) in DMRC's Phase IV works, the statement noted. The event was attended by Delhi's Chief Secretary, Dharmendra, and Dr. Vikas Kumar, Managing Director of DMRC. Anuj Dayal, Principal Executive Director of Corporate Communications at DMRC, expressed pride in this achievement and reaffirmed the organization's commitment to providing safe and efficient transport infrastructure for Delhi's residents. The contractor, Afcons, is executing the DC-05 package, which includes six underground stations, tunneling of 14.4 km including crossover, ten cross passages, and a 170-meter open and underground ramp. The company stated, Today, 3 km of twin tunneling has been completed from Derawal Nagar to Pulbangash. The twin tunnels were excavated at depths of 14-15 meters, passing through densely populated areas such as Rana Pratap Bagh and Punjabi Basti Colony, while also crossing beneath the Najafgarh drain, a structurally sensitive zone. Despite challenges such as tunneling through submerged water conditions and navigating the under-construction Ghanta Ghar station, no structural damage occurred. The tunnels, with an internal diameter of 5.8 meters, include six cross passages for passenger safety. Civil work for this section was executed by M/s Afcons. The deployment of TBM Bhoomi began on June 18, 2023, followed by TBM Srishti on August 19, 2023.

Infrastructure Urban

06 Jul 2026

ABS Marine Sees CRISIL Credit Rating Upgrade

ABS Marine Services has secured an upgrade to its long term and short term credit ratings from CRISIL, reflecting improved profitability and revenue growth through long term contracts. CRISIL moved the long term rating from BBB+/Stable to A-/Stable and revised the short term rating from A2 to A2+. The action signals strengthened financial metrics and operational resilience. The company benefited from durable client relationships with firms such as ONGC and Schlumberger. The rating decision followed stronger cash flows and an enlarged bank loan facility, which increased from Rs 3,705 million (m..

Infrastructure Transport

06 Jul 2026

Project BRAHMANK Marks 16 Years Of Strategic Roads In Arunachal

Project BRAHMANK is marking 16 years of work to establish strategic road and bridge links across Arunachal Pradesh, maintaining and developing 811 kilometres of roads and nearly 86 bridges that range from small culverts to large steel and arch bridges. These transport links are described as critical for ensuring year-round movement of defence personnel, equipment and essential supplies while improving everyday travel for people in remote villages. The project balances national security requirements with regional development by focusing on reliable access in challenging terrain. Notable enginee..

Infrastructure Transport

06 Jul 2026

Longleng CSOs Give One Week Ultimatum Over Two-Lane Highway

Civil society organisations (CSOs) in Longleng district have demanded immediate restoration of the deteriorating Changtongya–Longleng two-lane road and sought a detailed status report on the stalled construction within one week. The demand followed a consultative meeting convened under the Phom Peoples' Council (PPC) to discuss welfare and development concerns. PPC president YB Angam Phom said prolonged non-maintenance had caused hardship to commuters and affected transportation, local commerce and the district's development. The meeting urged authorities to undertake immediate restoration a..